the lesser lich is a 7th level caster (wizard). and has the following (20) spells and spell slots. is intelligence caster, with a +7 to spell attack and spell save DC = 15 Cantrips - 4 firebolt - dancing lights - mage hand message - 1st level - 4 slots silvery barbs cause fear fog cloud hideous laughter magic missile shield - 2nd level - 3 slots arcanists magic aura crown of madness darkness hold person misty step - 3rd level - 3 slots bestow curse clairvoyance counterspell fly hypnotic pattern slow - 4th level - 1 slot banishment sickening radiance private sanctum -

phylactery - will revive a month after being slain if not destroyed by radiant or fire damage   dual mind - can concentrate on two spells at once, so long as the spells are different levels